Thread-cutting mechanism for embroidering-machines.



M. SCHOENFBLD. THREAD CUTTING MECHANISM FOR EMBROIDERING MACHINES.

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THREAD CUTTING MECHANISM ron EMBROIDBRING MACHINES.

APPLICATION FILED FEB. 18, 1913.

1,107,71 1. Patented Aug. 18, 191 1 3 SHEETS-SHEET 2.

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Patented Aug. 18, 191 i 3 SHBETBSHBET 3.

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MORRIS SCI-IOENFELD, 0F RORSCHACH, SWITZERLAND.

THREAD-CUTTING MECHANISM FOR EMBROIDERING-MAGHINES.

To all whom it may concern Be it known that I, Moruus Sononnrnm, a citizen of the United States, and resident of Rorschach, Canton of St. Gall, Switzerland, have invented new and useful Improvements in Thread-Cutting Mechanism for Embroidering-Machines, of which the following is a full, clear, and exact specification.

It is already known to sever the connecting threads between two consecutive embroidery patterns in shuttle embroidery machines by the aid of mechanical devices. But usually in the case of embroidery machines having several horizontal rows of embroidery it has been needful to provide for each embroidery row separate cutting members which makes the machine very complicated.

The object of the present invention is an improved embroidery connecting-thread cutting mechanism for embroidering machines producing several horizontal rows of embroidery, which possesses the advantage of simplicity inasmuch as it comprises at least at one side of the surface of the material) a cutting implement of such construction and arrangement that by means of a relative motion between it and the material, the embroidery connecting threads will be cut or severed through all the present embroidery rows at a time.

The accompanying drawings illustrate several embodiments of the improved apparatus.

Figure 1 shows a front elevation of a thread cutting mechanism in a shuttle embroidcring machine with two horizontal rows of embroldery patterns and with the thread cutting implement of the mechanism out of action, that is to say, is moved away from the embroidery material to one side of the machine. Fig. 2 shows a vertical section through Fig. 1. Figs. 3, 4, 5 and 6 show special constructions of the cutting implement.

In the embroidery machine illustrated in Figs. 1 and 2 the stationary frame thereof is indicated with 1, 2, the embroidery frame with 3, and the embroidery material or fabric itself with 5 stretched between the embroidery frame rollers 4.

Upon the longitudinal bearers 2 of the machine frame are placed the needle supports 6, which carry in the well known manner the stitch forming mechanisms. More- Speeification of Letters Patent.

Application filed February 18, 1913.

Patented Au". 18, 1914. Serial No. 749,162.

over, the material presser shaft 7 is sup ported on these supports and the thread clipping rod 8 likewise. This latter can be moved either by hand or by the jacquard work and it allows by means of the thread clipping elements 10 to hold fast the end of the needle thread so as to prevent it from becoming unthreadeu after the connecting threads of the embroidery 9 have been cut or severed.

The connecting thread cutting device comprises several carriers 12 provided with con veyer rollers 14 and carrying each a vertically dependent cutter blade 11. In front of the embroidery plane there is placed a single carrier 12, which by means of its rollers 14 can travel upon the needle bar 23 belonging to the upper row of embroidery, and the cutter blade 11 whereof has such a length that it can reach both rows of embroidery when in use. Behind the embroidery plane there are two hind carriers 12 arranged, which are provided correspondingly to the two rows of embroidery with cutter blades, each belonging to one of the aforesaid rows of embroidery, and of which the upper one travels upon the corresponding shuttle driver bar 24 and the lower one upon the shuttle track bar 25. All the carriers are each provided with a handle 13 which serves for their actuation, by hand.

In the position of the parts illustrated in Fig. 1 the connecting thread cutting mechanism is in the position of rest, that is to say, out of use. The carriers 12 stand quite outside of the inclosure containing the stitch forming mechanisms, and moreover at the side of the embroidery frame, where they rest upon supports 15 attached to the machine frame. If it be desired to cut the connecting threads between the embroidery patterns, then the carriers 19 together with the cutter blades carried by them are pushed out of the illustrated position toward the embroidery and caused to travel past the same, so that the cutter blades of the carriers on the front side of the material intersect the stretched connecting threads on both rows of the embroidery, while the cutter blades of the two rear carriers intersect the rear connecting threads each on one of the rows of embroidery.

Fig. 3 illustrates a modification of the connecting thread cutting mechanism adaptcd for machines-having three rows of embroidery. Here, the front and rear carriers have each three vertically depending cutter blades 16, 17, 18 of different lengths which moreover need only be sharpened at the parts thereof corresponding to the height of the respective row of embroidery.

Fig. 4 shows another modification, in which for four rows of embroiderya corresponding number of blades 19 are adjustably fixed to a carrier bar descending vertically from the carrier.

In the modification shown in Fig. 5, there are provided in contra-distinction to the fore-going instead of the blade 19 little cutting tongues 20 attached to the carrier bar, in order when the carrier 12 is moved to the right to encounter the separate connecting threads 21, and cut them.

Fig. 6 shows a similar arrangement as that shown in Fig. 5 only here the cutting tongues are placed on both sides of the bearer rod in such a manner that it becomes possible to use the carrier for cutting the embroidery connecting threads, both for forward and also for backward motion.

What I claim is:

1. In embroidering machines, the combination of a fabric frame, means for producing several horizontal rows of embroidery patterns upon the material of said fabric frame, a cutting implement extending down over all said embroidery rows and having cutting parts at the height of each of the embroidery rows of the fabric, and means for allowing relative movement between said cutting implement and the fabric frame across all the embroidery rows so as to cause said implement to simultaneously cut the connecting threads in all said embroidery rows, substantially as described.

2. In embroidering machines, the combi' nation of a fabric frame, means for producing several horizontal rows of embroidery patterns upon the material of said fabric frame, a roller guided cutting implement arranged to simultaneously reach all said embroidery rows and having cutting parts at the heights of each of said embroidery rows of the fabric, means on the machine frame for guiding said cutting implement, extending from one side of the machine to the other, and means for allowing the cutting implement to be moved across the fabric frame from one side to the other, so as to cause it to simultaneously cut the connecting threads in all said embroidery rows, substantially as described.

3. In embroidering machines, the combination of a fabric frame, means for producing several rows of embroidery patterns upon the material of said fabric frame, movable carriers in front and in back of the fabric frame, said carriers being provided with dependent blades arranged to reach the different embroidery rows of the fabric, guide parts for said carriers and means for allowing them to be moved past the fabric frame so as to cause their blades .to cut the connecting threads in all said embroid ery rows by a single traveling movement of the carriers, substantially as described.

4. In embroidering machines, the combination of a fabric frame, means for producing several rows of embroidery patterns upon the material of said fabric frame, roller guided carriers in front and in back of the fabric frame, said carriers being provided with dependent blades arranged to reach the different embroidery rows of the fabric, guide parts for said carriers and means for allowing them to be moved past the fabric frame so as to cause their blades to cut the connecting threads in all said embroidery rows by a single traveling movement of the carriers, substantially as described.

5. In embroidering machines, the combination of a fabric frame, means for producing several horizontal rows of embroidery patterns upon the material of said fabric frame, a cutting implement arranged to simultaneously reach all said embroidery rows and having cutting parts at the height of each of said embroidery rows, means for holding said cutting implement in a position of rest at one side of the machine and means for allowing it to be moved out of its position of rest across the fabric frame from one side to the other so as to cause it to simultaneously cut the connecting threads in all said embroidery rows, substantially as described.

In witness whereof I have hereunto signed my name this third day of February 1913, in the presence of two subscribing witnesses.

MORRIS SCHOENFELD.

WVitnesses:

CAESAR Lone, FRIEDRICH SHEINER.

Copies of this patent may be obtained for five cents each. by addressing the Commissioner of Patents. Washington, D. G. 

